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21 October, 20:19

Using the crisscross method, what is the chemical formula for the ionic compound created when potassium (K) combines with Sulfur (S) ?

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  1. 21 October, 23:13
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    K2S

    Explanation:

    Potassium has a ionic charge of + 1 and sulfur has a ionic charge of - 2. Swap charges so that Potassium has - 2 and sulfur has + 1. Drop the charges. It'll be K2 and S1. When doing the crisscross method, you drop the one. Therefore, it is K2S.
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